<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title>HTML结构</title>

</head>
<body>
<ol>
    <li>ssss</li>
    <li>ssss</li>
    <li>ssss</li>
</ol>
<ul>
    <li>ssss</li>
    <li>ssss</li>
    <li>ssss</li>
</ul>


<dl>
    <dt>ssss</dt>
    <dt>aaa</dt>
    <dt>bbbb</dt>
</dl>

<sup>11</sup>
<sub>11</sub>


</body>
</html>